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Mariulka [41]
3 years ago
12

According to ohm's law what is the resistance of a light bulb if the applied voltage is 21 volts and the current is 3 amps?

Physics
1 answer:
Nady [450]3 years ago
6 0
Resistance = voltage/current = 21/3 = 7Ω
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Answer: Everything except heat and density

Explanation:

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The flower of the species Rosa verdus can be either green or red. in the species a single gene with two alleles determines flowe
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The kicker now kicks the ball with the same speed as in the number of 4,but at 60.0°from the horizontal or 30.0° from the vertic
Shkiper50 [21]

Answer:

i) 0.7

ii) 1.39

iii) 0.6

Next time, when compiling a Physics question, ensure you put the unit of each measurement.

Explanation:

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ii) distance travel = Range =  R = \frac{u^{2}Sin(2A) }{g}

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Subsituting values, we have: R = \frac{4^{2}Sin(2*60) }{10} = 1.39

iii) Maximum Height = H = \frac{u^{2}(Sin(A))^{2}  }{2g}

where u = speed = 4, A = 60 and  g = acceleration due to gravity = 10 (It is a constant);

Subsituting values, we have: \frac{4^{2}(Sin60)^{2}  }{2*10} = 0.6

4 0
3 years ago
An object of mass 4kg is moving along a horizontal plane. If the coefficient of kinetic friction is 0.2 find the friction force
lana66690 [7]

Answer:

The friction force acting on the object is 7.84 N

Explanation:

Given;

mass of object, m = 4 kg

coefficient of kinetic friction, μk = 0.2

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F = μkN

F = μkmg

where;

F is the frictional force

m is the mass of the object

g is the acceleration due to gravity

F = 0.2 x 4 x 9.8

F = 7.84 N

Therefore, the friction force acting on the object is 7.84 N

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3 years ago
Anyone tell me what is the physics​
Katyanochek1 [597]

Answer:

physic is branch of science in which math is its brother and will deal with the equation,law and evidence of natural phenomenon.

6 0
3 years ago
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